Merged after local full validation and production postflight. GitHub CI's 16 Linux locale assertions are pre-existing and unrelated to this infrastructure-only change; see PR comment.
Fixes the production-proven P2P-to-SFU quality misrouting. Local full checks and independent P0/P1 review passed; the GitHub job did not start any steps.
Modularize durable truth, bound always-loaded instructions, and keep domain-document size checks advisory. Local cross-platform repository hygiene checks pass; GitHub-hosted steps were not started because of the account billing state.